Parse error: syntax error, unexpected end of file in /home/dev69834/public_html/decora/wp-config.php on line 1

I know this question has been asked many times and i have read and tried everything but error still comes up. it was working fine before.I just changed the wp_debug to true and error came up . i tried reverting it back but still no luck. any kind of hint will be highly appreciated. here is my config.php

<?php
/**
* The base configurations of the WordPress.
*
* This file has the following configurations: MySQL settings, Table Prefix,
* Secret Keys, WordPress Language, and ABSPATH. You can find more information
* by visiting {@link http://codex.wordpress.org/Editing_wp-config.php Editing
* wp-config.php} Codex page. You can get the MySQL settings from your web host.
*
* This file is used by the wp-config.php creation script during the
* installation. You don't have to use the web site, you can just copy this file
* to "wp-config.php" and fill in the values.
*
* @package WordPress
*/
// ** MySQL settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define('DB_NAME', 'dev69834_decora');
/** MySQL database username */
define('DB_USER', 'dev69834_decora');
/** MySQL database password */
define('DB_PASSWORD', '');
/** MySQL hostname */
define('DB_HOST', 'localhost');
/** Database Charset to use in creating database tables. */
define('DB_CHARSET', 'utf8');
/** The Database Collate type. Don't change this if in doubt. */
define('DB_COLLATE', '');
/**#@+
* Authentication Unique Keys and Salts.
*
* Change these to different unique phrases!
* You can generate these using the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org secret-key service}
* You can change these at any point in time to invalidate all existing cookies. This will force all users to have to log in again.
*
* @since 2.6.0
*/
define('AUTH_KEY', 'ch7u;Gf~(Icyvb%a}aV$_zXyDVaLJr4>bWW7s)H/&!a%PKQ5`2spA+Aq79~_kQ0W');
define('SECURE_AUTH_KEY', 'VvP1APoy[]$iHs2!qZ-7/13Rj>]bk|<#yUu/GR:Y>*TGqRV`<q{bs@e6j.y<sw6/');
define('LOGGED_IN_KEY', 'GD f{h 7NlU>*XT]}Tu.*RKJ@mXfOin<(Iua$$O{DMvGr1,k{yZeDCTZGzGzQA$[');
define('NONCE_KEY', 'J(8_./~k?D^F?{B+g3i&H> ]X7G+eW/vW%FlS?~RVrFEolaPAGN*Kv<4c5>C#HQB');
define('AUTH_SALT', '[y;ja:Vw(.8V+XOM]fF%v{|ff6!M#P%E9ZlxiX|EeDH;6)R-J@zN,g|z=!+2*)NW');
define('SECURE_AUTH_SALT', ']g[V>6XW}~xqgW;w?@MF_nIATyyNBI_DMK}~-p<.x0[gc%}G%h8VLvOYfh!u.GqV');
define('LOGGED_IN_SALT', 'a9>6U>ddV&^W*CcDitsrgxn7LX)j`j%hTB+<dg)bNMzPw%JK<Q#$<4AUSM_-ntK~');
define('NONCE_SALT', 'VRA(-M4W?,+q|UNe&Uo]Dbg+xiw[M 7jmBSm-,TS~You)]KnlVS:bR(2XA jF]qE');
/**#@-*/
/**
* WordPress Database Table prefix.
*
* You can have multiple installations in one database if you give each a unique
* prefix. Only numbers, letters, and underscores please!
*/
$table_prefix = 'dc_';
/**
* WordPress Localized Language, defaults to English.
*
* Change this to localize WordPress. A corresponding MO file for the chosen
* language must be installed to wp-content/languages. For example, install
* de.mo to wp-content/languages and set WPLANG to 'de' to enable German
* language support.
*/
define ('WPLANG', '');
/**
* For developers: WordPress debugging mode.
*
* Change this to true to enable the display of notices during development.
* It is strongly recommended that plugin and theme developers use WP_DEBUG
* in their development environments.
*/
define('WP_DEBUG', false);
/* That's all, stop editing! Happy blogging. */
/** Absolute path to the WordPress directory. */
if ( !defined('ABSPATH') )
define('ABSPATH', dirname(__FILE__) . '/');
/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');